Shareholder Report, Line Graph (Details) 1014040_Franklin International Aggregate Bond ETF_Single Class_TSR Annual {Single Class} - USD ($) |
12 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
Mar. 31, 2023 |
Mar. 31, 2022 |
Mar. 31, 2021 |
Mar. 31, 2020 |
Mar. 31, 2019 |
May 30, 2018 |
Mar. 31, 2026 |
|
| Franklin International Aggregate Bond ETF | |||||||||
| Account Value [Line Items] | |||||||||
| Line Graph and Table Measure Name | Franklin International Aggregate Bond ETF (NAV) | ||||||||
| Accumulated Value | $ 10,587 | $ 10,288 | $ 9,889 | $ 10,130 | $ 10,481 | $ 10,405 | $ 10,000 | $ 10,000 | $ 10,861 |
| Bloomberg Global Aggregate Index [Member] | |||||||||
| Account Value [Line Items] | |||||||||
| Line Graph and Table Measure Name | Bloomberg Global Aggregate Index | ||||||||
| Accumulated Value | 9,914 | 9,620 | 9,573 | 10,413 | 11,126 | 10,630 | 10,201 | 10,000 | $ 10,336 |
| Bloomberg Global Aggregate ex-USD Index Hedged USD [Member] | |||||||||
| Account Value [Line Items] | |||||||||
| Line Graph and Table Measure Name | Bloomberg Global Aggregate ex-USD Index Hedged USD | ||||||||
| Accumulated Value | $ 11,536 | $ 11,073 | $ 10,454 | $ 10,807 | $ 11,206 | $ 11,045 | $ 10,519 | $ 10,000 | $ 11,856 |